$OpenBSD: patch-backend_gt68xx_low_c,v 1.1 2016/05/18 20:02:27 sthen Exp $

errno.h header is required now that errno is a per-thread variable.
"undefined symbol 'errno'" at runtime with dlopen()'d modules.

--- backend/gt68xx_low.c.orig	Wed May 18 13:59:02 2016
+++ backend/gt68xx_low.c	Wed May 18 13:59:11 2016
@@ -54,6 +54,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 
 #ifdef USE_FORK
 #include <sys/wait.h>
